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#!/usr/bin/env python
# -*- coding: utf-8 -*-
# copyright 2014 Hamilton Kibbe <ham@hamiltonkib.be>
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# http://www.apache.org/licenses/LICENSE-2.0
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""
Gerber (RS-274X) Statements
===========================
**Gerber RS-274X file statement classes**
"""
class Statement:
pass
def update_graphics_state(self, _state):
pass
def render_primitives(self, _state):
pass
class ParamStmt(Statement):
pass
class FormatSpecStmt(ParamStmt):
""" FS - Gerber Format Specification Statement """
def to_gerber(self, settings):
zeros = 'T' if settings.zeros == 'trailing' else 'L' # default to leading if "None" is specified
notation = 'A' if settings.notation == 'absolute' else 'I'
number_format = str(settings.number_format[0]) + str(settings.number_format[1])
return f'%FS{zeros}{notation}X{number_format}Y{number_format}*%'
def __str__(self):
return '<FS Format Specification>'
class UnitStmt(ParamStmt):
""" MO - Coordinate unit mode statement """
def to_gerber(self, settings):
return '%MOMM*%' if settings.units == 'mm' else '%MOIN*%'
def __str__(self):
return ('<MO Coordinate unit mode statement>' % mode_str)
class LoadPolarityStmt(ParamStmt):
""" LP - Gerber Load Polarity statement """
def __init__(self, dark):
self.dark = dark
def to_gerber(self, settings=None):
lp = 'D' if self.dark else 'C'
return f'%LP{lp}*%'
def __str__(self):
lp = 'dark' if self.dark else 'clear'
return f'<LP Level Polarity: {lp}>'
def update_graphics_state(self, state):
state.polarity_dark = self.dark
class ApertureDefStmt(ParamStmt):
""" AD - Aperture Definition Statement """
def __init__(self, number, aperture):
self.number = number
self.aperture = aperture
def to_gerber(self, settings=None):
return f'%ADD{self.number}{self.aperture.to_gerber()}*%'
def __str__(self):
return f'<AD aperture def for {str(self.aperture).strip("<>")}>'
class ApertureMacroStmt(ParamStmt):
""" AM - Aperture Macro Statement """
def __init__(self, macro):
self.macro = macro
def to_gerber(self, settings=None):
unit = settings.units if settings else None
return f'%AM{self.macro.name}*\n{self.macro.to_gerber(unit=unit)}*\n%'
def __str__(self):
return f'<AM Aperture Macro {self.macro.name}: {self.macro}>'
class ImagePolarityStmt(ParamStmt):
""" IP - Image Polarity Statement. (Deprecated) """
def to_gerber(self, settings):
#ip = 'POS' if settings.image_polarity == 'positive' else 'NEG'
return f'%IPPOS*%'
def __str__(self):
return '<IP Image Polarity>'
class CoordStmt(Statement):
""" D01 - D03 operation statements """
def __init__(self, x, y, i=None, j=None):
self.x, self.y, self.i, self.j = x, y, i, j
def to_gerber(self, settings=None):
ret = ''
for var in 'xyij':
val = getattr(self, var)
if val is not None:
ret += var.upper() + settings.write_gerber_value(val)
return ret + self.code + '*'
def __str__(self):
if self.i is None:
return f'<{self.__name__.strip()} x={self.x} y={self.y}>'
else:
return f'<{self.__name__.strip()} x={self.x} y={self.y} i={self.i} j={self.j}>'
class InterpolateStmt(CoordStmt):
""" D01 Interpolation """
code = 'D01'
class MoveStmt(CoordStmt):
""" D02 Move """
code = 'D02'
class FlashStmt(CoordStmt):
""" D03 Flash """
code = 'D03'
class InterpolationModeStmt(Statement):
""" G01 / G02 / G03 interpolation mode statement """
def to_gerber(self, settings=None):
return self.code + '*'
def __str__(self):
return f'<{self.__doc__.strip()}>'
class LinearModeStmt(InterpolationModeStmt):
""" G01 linear interpolation mode statement """
code = 'G01'
class CircularCWModeStmt(InterpolationModeStmt):
""" G02 circular interpolation mode statement """
code = 'G02'
class CircularCCWModeStmt(InterpolationModeStmt):
""" G03 circular interpolation mode statement """
code = 'G03'
class SingleQuadrantModeStmt(InterpolationModeStmt):
""" G75 single-quadrant arc interpolation mode statement """
code = 'G75'
class RegionStartStatement(InterpolationModeStmt):
""" G36 Region Mode Start Statement. """
code = 'G36'
class RegionEndStatement(InterpolationModeStmt):
""" G37 Region Mode End Statement. """
code = 'G37'
class ApertureStmt(Statement):
def __init__(self, d):
self.d = int(d)
def to_gerber(self, settings=None):
return 'D{0}*'.format(self.d)
def __str__(self):
return '<Aperture: %d>' % self.d
class CommentStmt(Statement):
""" G04 Comment Statment """
def __init__(self, comment):
self.comment = comment if comment is not None else ""
def to_gerber(self, settings=None):
return f'G04{self.comment}*'
def __str__(self):
return f'<G04 Comment: {self.comment}>'
class EofStmt(Statement):
""" M02 EOF Statement """
def to_gerber(self, settings=None):
return 'M02*'
def __str__(self):
return '<M02 EOF Statement>'
class UnknownStmt(Statement):
def __init__(self, line):
self.line = line
def to_gerber(self, settings=None):
return self.line
def __str__(self):
return f'<Unknown Statement: "{self.line}">'
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